integration

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Nikita Thalia
Nikita Thalia 2011 年 8 月 18 日
syms is a command or not? how to find integration?

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回答 (2 件)

Paulo Silva
Paulo Silva 2011 年 8 月 18 日
yes and no, to do symbolic integration use int
syms x
int(x*log(1 + x), 0, 1)
Walter Roberson
Walter Roberson 2011 年 8 月 18 日
syms uses command/function duality, as is often the case for save() and load().
syms is part of the Symbolic Toolbox and is not defined if you do not have that toolbox.
For numeric integration, see http://www.mathworks.com/help/techdoc/ref/f16-5872.html#f16-6472 and http://www.mathworks.com/help/techdoc/ref/polyint.html and http://www.mathworks.com/help/techdoc/ref/f16-5872.html#f16-6443 and http://www.mathworks.com/help/techdoc/ref/trapz.html (and http://www.mathworks.com/help/techdoc/ref/cumtrapz.html)

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